Fans of this wonderful film will be interested to know in more detail what happened and how to remove and more.
In general, all that's left overs.
Back to the Future - interesting facts (91 pics + 2 video)

A little more information about this film:
How to remove "Back to the Future" (video)
Flying car from the movie Back to the Future (video)
Famous actors from the movie Back to the Future (6 photos)
The car from the movie Back to the Future (13 photos)
Trainers from the movie "Back to the Future" - became a reality (video)